CMOS Circuits for Piezoelectric Energy Harvesters
Efficient Power Extraction, Interface Modeling and Loss Analysis
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Beschreibung
This book deals with the challenge of exploiting ambient vibrational energy which can be used to power small and low-power electronic devices, e.g. wireless sensor nodes. Generally, particularly for low voltage amplitudes, low-loss rectification is required to achieve high conversion efficiency. In the special case of piezoelectric energy harvesting, pulsed charge extraction has the potential to extract more power compared to a single rectifier. For this purpose, a fully autonomous CMOS integrated interface circuit for piezoelectric generators which fulfills these requirements is presented.
Due to these key properties enabling universal usage, other CMOS designers working in the field of energy harvesting will be encouraged to use some of the shown structures for their own implementations. The book is unique in the sense that it highlights the design process from scratch to the final chip. Hence, it gives the designer a comprehensive guide of how to (i) setup an appropriate harvester model to get realistic simulation results, (ii) design the integrated circuits for low power operation, (iii) setup a laboratory measurement environment in order to extensively characterize the chip in combination with the real harvester, and finally, (iv) interpret the simulation/measurement results in order to improve the chip performance. Since the dimensions of all devices (transistors, resistors etc.) are given, readers and other designers can easily re-use the presented circuit concepts.
This book deals with the challenge of exploiting ambient vibrational energy which can be used to power small and low-power electronic devices, e.g. wireless sensor nodes. Generally, particularly for low voltage amplitudes, low-loss rectification is required to achieve high conversion efficiency. In the special case of piezoelectric energy harvesting, pulsed charge extraction has the potential to extract more power compared to a single rectifier. For this purpose, a fully autonomous CMOS integrated interface circuit for piezoelectric generators which fulfills these requirements is presented.
Due to these key properties enabling universal usage, other CMOS designers working in the field of energy harvesting will be encouraged to use some of the shown structures for their own implementations. The book is unique in the sense that it highlights the design process from scratch to the final chip. Hence, it gives the designer a comprehensive guide of how to (i) setup an appropriate harvester model to get realistic simulation results, (ii) design the integrated circuits for low power operation, (iii) setup a laboratory measurement environment in order to extensively characterize the chip in combination with the real harvester and finally, (iv) interpret the simulation/measurement results in order to improve the chip performance. Since the dimensions of all devices (transistors, resistors etc.) are given, readers and other designers can easily re-use the presented circuit concepts.
Includes a guide of how to extract model parameters for given piezoelectric harvester Helps integrated circuit designers to develop their own chips for energy harvesters Presented circuit concepts can be re-used since dimensions of all devices are given Detailed theoretical and analytical analysis of chip losses helps achieving high efficiency Gives hints of how to characterize the fabricated chip in combination with the real harvester Includes supplementary material: sn.pub/extras
Autor*in
Thorsten Hehn
Themen in »CMOS Circuits for Piezoelectric Energy Harvesters«
CMOS Circuits Conduction Losses in CMOS Circuits Different Interface Circuits Energy Harvester Modelling Energy Harvesting Fully Autonomous Circuits Integrated Circuit power consumption Interface Circuit Low Power Performance Analysis Piezoelectric Devices Piezoelectricity Pulsed Synchronous Charge Extractor (PSCE) Self-powered Circuits